| 174 | Cogent Communications |
| 3549 | Level 3 Parent LLC |
| 3790 | Radiografica Costarricense |
| 6453 | Tata Communications (America) Inc |
| 11830 | Instituto Costarricense de Electricidad Y Telecom. |
| 12139 | Amnet US |
| 12222 | Akamai Technologies Inc. |
| 12779 | ITGATE |
| 13645 | BroadbandONE Inc. |
| 14754 | Telgua |
| 16973 | T-Four Services S.A |
| 18747 | IFX Corporation |
| 18916 | Oracle Corporation |
| 20299 | Newcom Limited |
| 20940 | AKAMAI-ASN1 |
| 22363 | Powerhouse Management Inc. |
| 23520 | Columbus Networks USA Inc. |
| 25577 | C4L-AS |
| 26426 | Columbus Networks Panama |
| 27876 | American Data Networks |
| 27908 | Tracity Inc. |
| 27973 | Constructora Pura Vida S.A. |
| 28007 | Gold Data C.A. |
| 28022 | Crisp S.A. |
| 28050 | ADN Solutions S.A. (Rokru Int.) |
| 28086 | Worldcom de Costa Rica S.A. |
| 28110 | Rack Lodge S.A. |
| 28317 | Boomerang Wireless S.A. |
| 30361 | Swiftwill Inc. |
| 32034 | NEWCOM mirror object from ARIN |
| 44444 | FORCEPOINT-CLOUD-AS |
| 46614 | GBNet Corporation |
| 52228 | Cable Tica |
| 52263 | Telecable Economico S.A. |
| 52325 | Netsys CR S.A. |
| 52342 | Critical Colocation S.A. |
| 52356 | R&H International Telecom Services Sa. |
| 52392 | Grupo Telco de Centroamerica S.A. |
| 52395 | Multiflex Payment Services Ltda |
| 52408 | Itech Soluciones S.A |
| 52423 | Data Miners S.A. ( Racknation.cr ) |
| 52429 | Credomatic de Costa Rica S.A. |
| 52450 | FISERV COSTA RICA S.A. |
| 52463 | Banco Nacional de Costa Rica (BNCR) |
| 52468 | Ufinet Panama S.A. |
| 52470 | CONARE |
| 52476 | P.R.D. Internacional |
| 53365 | Webair Internet Development Company Inc |
| 53889 | Micfo LLC. |
| 54044 | Chris Danielle Micro Solutions (CDMS) Inc. |
| 55082 | WINK Streaming LLC |
| 61464 | BADJELLY S.A. |
| 61479 | Dole Shared Services Limited |
| 64102 | Oracle Corporation |
| 203335 | NETENT3-AS |
| 262145 | Cooperativa de Electrificacion Rural de San Carlos R.L. (Coopelesca R.L.) |
| 262149 | Sistemas Fratec S.A. |
| 262152 | Banco de Costa Rica |
| 262171 | Telecom Logistics S.A. |
| 262182 | Media Networks Latin America SAC |
| 262184 | IBW Comunicaciones S.A |
| 262197 | Millicom Cable Costa Rica S.A. |
| 262202 | Telefonica de Costa Rica TC SA |
| 262241 | Coopealfaroruiz |
| 262244 | Abdicar Communications S.A. |
| 262252 | Servicios Technologicos Antares de Costa Rica S.A. |
| 262267 | American Servers and Networks Inc |
| 263220 | BANCO PROMERICA COSTA RICA |
| 263232 | esph.sa |
| 263246 | MetroWireless Solutions de Costa Rica SA |
| 263248 | GCI Service Provider S.A. |
| 263683 | Universidad de Costa Rica |
| 263698 | Transdatelecom S.A |
| 263713 | Server Lodge S.A. |
| 263749 | Junta Administrativa del Servicio Electrico Municipal de Cartago(JASEC) |
| 263762 | Cooperativa de Electrificacion Rural de Guanacaste R.L. |
| 263779 | Academia Nacional de Ciencias |
| 263785 | Columbus Networks de Costa Rica |
| 263796 | Othos Telecomunications |
| 263831 | Contraloria General de la Republica |
| 263832 | Green Jal Investments S.A. |
| 264615 | Inasol Inalambrica Soluciones S.A. |
| 264621 | BLUE SAT SERVICIOS ADMINISTRADOS DE TELECOMUNICACIONES SA C |
| 264644 | Information Technologies Outsourcing |
| 264654 | Fibernet |
| 264686 | Tecnologia Y Sistemas Wilcasji Sociedad Anonima |
| 264763 | RackNation S.A. |
| 264820 | Corebases S.A |
| 265636 | CoopeSantos R.L. |
| 265766 | Block Ddos S.A. |
| 265797 | Ticaribe S.A. |
| 265873 | Fiber to the Home FTTH SA |
| 266665 | Ideas Gloris Sociedad Anonima |
| 266717 | Academia Nacional de Ciencias |
| 266719 | Academia Nacional de Ciencias |
| 266720 | VMWare Costa Rica Limitada |
| 266738 | RED CENTROAMERICANA DE TELECOMUNICACIONES S.A. ( REDCA ) |
| 266746 | Continum Datacenter Sociedad Anonima |
| 266853 | Unknown |
| 266875 | Unknown |
| 266882 | Unknown |
| 267698 | No Registry Entry |
| 267740 | Unknown |
| 267744 | Unknown |
| 267858 | Unknown |